Flown on the A332 to Bangkok last month, the crew said it was the last minute change.... A/C reg.: 9M-MTV my seat is :2K and I remembered the aircraft has even no IFE and safety video is presented in live by CC.
I guest that MH will not install the IFE system and will give the protable small TV for J class if flying long haul (for example: AKL or PER).....But seats at J class is great, with long leg room but you will feel too far the meal table, therefore, you might need to move forward of the seat.